diff --git a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/mainguiwindow.cpp b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/mainguiwindow.cpp
index 2a57cad0ca496c47b4747be9a3953c9d8bd7133c..10c990cfdf4dee848f71ae398f11b18ec203f9bc 100755
--- a/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/mainguiwindow.cpp
+++ b/pps_ws/src/d_fall_pps/GUI_Qt/CrazyFlyGUI/src/mainguiwindow.cpp
@@ -746,7 +746,8 @@ void MainGUIWindow::on_refresh_student_ids_button_clicked()
     {
         std::string s = v_str[i];
         std::smatch m;
-        std::regex e ("\\/(\\d)\\/PPSClient");
+        //std::regex e ("\\/(\\d)\\/PPSClient");
+        std::regex e ("\\/agent(\\d\\d\\d)\\/PPSClient");
 
         // std::regex e("\\/PPSClien(.)");